ORLANDO, Fla. — Florida politicians and civil rights leaders joined calls for the firing of a police chief in the case of a neighborhood watch captain who killed an unarmed black teenager, as new details emerged on Wednesday about police handling of the investigation.

“The reality is that people in this community have lost faith in the police chief’s ability to keep their children safe,” Benjamin Jealous, president of the National Association for the Advancement of Colored People (NAACP), told Reuters.

Florida congresswoman Frederica Wilson, a member of the black congressional caucus, echoed the call in an appearance on CNN. “Not only would I like to see it happen, but I’m joining with them to make sure it happens,” Wilson…